名称:
A stereodivergent cascade imine→azomethine ylide→1,3-dipolar cycloadditive approach to α-chiral pyrrolidines
摘要:
Stereodivergent [3+2] cycloadditions of chiral alpha-amino azoinethine ylides leading to highly functionalized pyrrolidines are reported. The marriage of substrate conformational preferences and either an inter- or intramolecular cycloaddition manifold leads to either the l (syn) or u (anti) relationship between the pyrrolidine and alpha-stereocenters. The latter result may be applicable to a new approach to the bioxalomycin family of antibiotics. (c) 2005 Elsevier Ltd. All rights reserved.
DOI:
10.1016/j.tetlet.2005.05.119